Which one of the following is smallest in value? A(13+16)−1\left(\frac13+\frac16\right)^{-1}(31+61)−1Blog25\log_25log25C6\sqrt66D52\frac5225E23/22^{3/2}23/2F157\frac{15}{7}715G3−123-\frac123−21